I'm no expert, but I fiddled with it. As you can see you took a snapshot of a single frame, and you can see the timeline of all DirectX calls and more importantly draw calls. If you go to the bottom of the list, at the last draw call, you can see the final scene preview on the right. Right click on a pixel on the backbuffer there and select "debug this pixel", it will enter a line-per-line debugger of your hlsl shader with the values for this pixel.